Q.The net force exerted on a particle acts in the positive x direction. Its magnitude increases linearly from zero at x = 0, to 288 N at x = 3.0 m. It remains constant at 288 N from x = 3.0 m to x = 7.0 m and then decreases linearly to zero at point A where x = 10.0 m. Determine the work done to move the particle from x = 0 to x = 10.0 m by graphically determining the area under the F versus x graph. (Do this on paper. Your instructor may ask you to turn in this graph.)

Q. A 0.8- m long rod rotates about an axis through one end and perpendicular to the rod, with an angular speed of 1.9 rev/s. The plane of rotation of the rod is perpendicular to a uniform magnetic field of 0.8 T. Calculate the emf induced across the ends of the rod.